Chinese Journal of Computers   Full Text
Title	A Dynamic Management Approach to Mediation-Based Service Collaboration Process
Authors	QIAO Xiao-Qiang WEI Jun HUANG Tao
Address	(Technology Center of Software Engineering, Institute of Software, Chinese Academy of Sciences, Beijing 100190)
Year	2008
Issue	No.8(1422—1433)
Abstract &   Background	Abstract Service collaboration realizes complex business logic based on Web services and through which to construct applications. It is necessary of compatibility and consistency between interactive services for correct service collaboration. Mediation technologies provide effective approaches for bridging service differences. Considering the dynamic nature of service-oriented computing, mediation itself should be equipped with dynamic adaptation and re-configuration capabilities to avoid the bottle-neck of the dynamic management of collaboration system. This paper proposes a mediation-based approach to facilitate service collaboration when mismatches occur between interactive services. The execution model and the adaptation method for mediators are also presented to realize the re-configuration and dynamic adjustment of mediators at runtime, which ensures the agility and adaptability of service collaboration based on mediation mechanism. Keywords Web services; service collaboration; protocol mediation; dynamic management Background The main research of the group focuses on Service Oriented Architecture (SOA) and Service Oriented Computing (SOC), which includes service composition, service discovery and selection, service quality management and service assessment, etc. This work is supported by the National Natural Science Foundation of China under Grant No.60673112, the National Basic Research Program (973 Program) of China under Grant No.2002CB312005, and the National High-Tech Research and Development Program (863 Program) of China under grant No.2006AA01Z163 and No.2007AA010301. In order to ensure the correct service collaboration, the interactions among participating services should be compatible and consistent. Mediation technologies provide effective approaches to bridge service differences for correct service collaboration. However, as for the dynamic nature of service-oriented computing, mediation should be equipped with dynamic adaptation and re-configuration capabilities to avoid the bottle-neck of the dynamic management of collaboration system. This paper proposes a mediation approach for service collaboration that preserves the autonomy of concrete services and improves the flexibility of service collaboration. An adaptation method for proposed mediation structure is also presented to ensure the agility and adaptability of service collaboration based on mediation mechanism.